Visualizing internal wave generation by finite cylinder oscillations using stereo particle image velocimetry
Name
920897795-MIT.pdf
Description
Full printable version
Size
3.63 MB
Format
Adobe PDF
Checksum (MD5)
97ba9a5f7047ca4afd7abc0543bee8a8
Author(s)
Wilson, Spencer (Spencer Ryan)
Advisor(s)
Thomas Peacock.
Alternative Title
Stereoscopic PIV
Date Issued
2015
Publisher
Massachusetts Institute of Technology
Abstract
This thesis investigates internal wave generation in a stratified fluid by means of an oscillating cylinder. We observe the consequences of boundary effects by the production of an out-of-plane velocity field as the cylinder span is decreased. Four cylinders are used. Stereoscopic PIV is utilized for flow visualization and velocity field quantification of the three-dimensional internal wave field evolution. This data is analyzed to determine a relationship between the generation source span as a function of out of plane velocity components in the resultant wave field. As the span of the cylinder is systematically decreased, we observe the evolution of the wave field towards three-dimensionality. To better understand the nature of these boundary effects, a horizontal cylinder is imaged at four location along its length. A tilted cylinder is imaged at its end for two forcing frequencies. These experiments allow a qualitative grounding in the production of wave cones from finite cylindrical generation sources.
Description
Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 43).
Subjects
Mechanical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
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